Smoke-purifier.



w. w. MARTIN.

SMOKE PUBIFIER.

APPLICATION FILED 'AUG.15. 1916.

1,269,724. Pat anted June 18, 1918.1

WILLIAM W. MARTIN, 0F PITTSBURGH, PENNSYLVANIA.

SMOKE-PURIFIER.

Specification of Letters Patent.

Patented Jane is, 1918.

Application filed August 15, 1916. Serial No. 115,043. I

v To all whom it may concern:

Be it known that 1, WILLIAM V. MARTIN, a citizen of the United States,residing" at Southside, Pittsburgh, in the county of Allegheny and Stateof Pennsylvania, have in- Vented certain new and useful Improvements inSmoke-Purifiers, of which the following is a specification. I

This invention relates to an improvement in smoke purifiers, and moreparticularly to devices of this nature of the type in which the smokeand gas laden air from furnaces, boilers, and the like, is passedthrough a moisture laden closed air space where the products ofcombustion passing from the fire are subjected to treatment by beingpermeated and saturated with moisture to thus relieve the air ofimpurities by washing the same out and causing precipitation thereof;

An object of my invention is to provide a device of the nature describedwhich is so constructed that it may be connected with the usual. flue orstack from a furnace, boiler, or other heating arrangement and may havethe products of combustion taken from the flue or stack and passedthere-.

through, the impurities being taken out and discharged to a sewer,cesspool, or at some other suitable point and the washed smoke beingdischarged into the atmosphere.

A further object is to so construct the device that the smoke will bepremoistened previous to the subjection of the same to water spraysforming a part of the structure and thus a more perfect saturation willbe accomplished.

Yet another object is to provide draft inducing means which will taketheproducts of combustion from the flue or stack, together with a damperlocated in the'flue and mechanism so arranged that upon starting the fanthe damper will be closed to thus direct the products of combustionthrough the apparatus of my invention.

With the above and other objects in View, my invention consists incertain novel features of construction and combinations of parts whichwill be hereinafter set forth in connection with the drawings and thenmore particularly pointed out in the claims.

The accompanying drawing shows a dia grammatic illustration of theapparatus of my invention together with the manner of fitting the samein conjunction with a. boiler and flue, and illustrates portions of thestructure in section to better disclose the ar rangement of the parts.

The boiler 1 has the smoke passage or flue- 2 arranged therefrom andwith a suitable chimney or stack, these parts being of standardconstruction and not being required to be specifically arranged for theadaptation of my invention. Any suitable and desired form of damper ordraft control may be arranged in conjunction with the flue 2, and acut-off damper 3, which isof the butterfly type, is mounted in the flueto be normally held open by means of the weight 4 and to be capable ofturning movement to close across the flue to entirely shut the passagethereof.

A washing tank 5 is mounted adjacent to the flue and a smoke pipe 6 isconnect'edbetween the flue 2- and this washing tank 5. A fan casing 7 ismounted adjacent to the Washing tank 5 and an air pipe 8 is connectedbetween the fan casing and the washing tank 5, the connection with thewashing tankbeing at a point preferably opposite to the connection ofthe smoke pipe 6' therewith. A suitable fan 9 is mounted in the fancasing? to be'operated to create a suction through the air pipe 8 whichwill consequently cause draft through the smoke pipe 6 and the washingtank 5 to take the prod-- ucts of combustion from the flue 2 throughthis smoke pipe 6 into the washing tank 5, a discharge pipelObeing'conne'cted with the fan casing 7. a i

A water pipe 11 is led from' a main 12 to extend up through the washingtank 5"and a plurality of branch pipes 12" are connected with this waterpipe 11 and are'disposed to 13, so that as water is supplied to the pipe11 from the main 12, this water will be sprayed within the washing tankto saturate the air in all parts thereof, a valve 14 being provided inthe pipe 11 to control the supply of water to the pipe '11. As the fan 9is operated, draft will be created through the smoke pipe 6 andconsequently the products of combustion will be taken from the flue anddrawn into the washing tank 5, and then with the. water valve 14 opened,this smoke is subjected to a washing and purifying action through thepassage of'the spray water therethrough and the purified smoke is takenfrom the tank 5 through the pipe 8 to be discharged from the fan casing7 to the pipe 10 which is led to open at any desired point. A drain pipe15 is connected to the bottom of the washing tank 5 to drain the sootand filth laden water from the washing tank 5, and this pipe 15 may beled to connect with a sewer, or cesspool, or may be connected at anyother desired point which will permit disposal of the water and slimesas taken from the washing tank, a valve 16 being connected in this pipe15 to control the flow therethrough.

It is preferable that the products of combustion as taken through thesmoke pipe 6 be premoistened previous to the passage into the washintank 5, and for this purpose I have provi ed a. steam pipe 17 leadingfrom the boiler 1 which said pipe has the branch pipes 18 extendedwithin the smoke pipe 6 where suitable jet openings are provided. Valves19 are connected in the branch steam pipes 18, and thus as these valves19 may be opened to permit the supply of steam from the steam pipe 17,the flow of the steam through the jet openings of the branch pipe 18will cause an increasein the draft force exerted through the smoke pipe6 as they will have an injector action therein, and at the same timetheproducts of combustion passing through this smoke pipe will besubjected to the moistening action of the wet or live steam which isbeing supplied through the jet openings, this steam acting not only tomoisten the products of combustion but also to break up any largerparticleswhich may be contained therein so that when the products ofcombustion are taken into the washin tank 5 and subjected to the waterspray, t e water will take up the soot and other foreign particles whichmay be contained therein and will cause more ready precipitationthereof. While the drawing illustrates only two of the branch pipes 18,it will of course be understood that a greater or lesser number might beemployed and that these branch pipes might have the jet openings thereofdisposed to direct the streams of steam at various angles, it of coursebeing understood that it is perhaps preferable that the direction ofejection of the streams be with the course of travel of the products ofcombustion as drawn into the washing tank through the suction action ofthe fan 9.

j While the fan 9 will doubtless exert sufficient draft force throughthe smoke passage 6 that the products of combustion will be takenthrough from the fine 2, where a work draft is used on the fire, some ofthe products of combustion may find their way up through the flue andout at the chimney or stack, and to insure that the products ofcombustion will be taken through the smoke pipe 6, it is desirable thatmeans be provided to close the damper 3 across the fine 2 uponcommencement of the operatiorf of the fan 9. In the present disclosure,I have shown the power means for the fan as being an electric motor 20which is connected to drive the fan through the medium of the belt 21.The circuit wires as indicated at 22, which are connected with thismotor 20 are'led to connect with a magnetic coil 23 of the solenoid typewhich is located adjacent to the flue at that point where the damper 3is mounted. A core 24; is mounted in the coil 23 to be capable ofendwise shifting movement and to be affected by the energization of thecoil, and this core 2 1 has a link 25 connected therewith which at itsfree end is connected with an arm 26 which rocks the damper 3. A switch27 is connected in the circuit 22 and when this switch is open thecircuit will be deenergized and thus the motor 20 will be idle and atthe same time the core 24 of the magnetic coil will be free which willallow the damper 3 to be opened by the counterbalance action of theweight 4:- As the switch 27 is closed the motor 20 will be started toinitiate operation of the fan 9 and at the same time the magnetic coil23 will be energized to draw the. core 2+1 within the same and throughthe connection of the link 25 with the arm 26 of the damper 3, thedamper will be rocked to take a closed position across the fine.

It will of course be understood that previous to the starting of the fan20 the water supply valve 14- will have been opened and also it ispreferable that the valve 19 of the steam branch pipes 18 be openedbefore the switch 27 is thrown, the parts being so arranged that theworking action is immediately commenced when thesmoke and products ofcombustion start through the smoke pipe 6. This cutting off of the fine2 and the creation of the suction through the smoke pipe 6 will act todraw all of the products of combustion from the flue and to take thesame into the washing tank 5 where they will be thoroughly cleansedafter which the purified smokewill be taken through the pipe 8 and willthen be passed through the discharge pipe 10 to be released into theatmosphere at any desired point to which the pipe 10 may be led.Immediately the switch 27 is opened, the circuit connection to the motorwill be broken and at the sametime the fan is stopped the coil 23 willbe deenergized and the weight 4 will then be free to swing the damper 3to the open position so that the line 2 will be opened for the passageof the products of combustion there through.

While I have herein shown and described only specific constructionarranged in the formation of the spray device for the washing tank, onlyspecific connections for the smoke and air pipes to and fromthe wash=ing tank, and have limited myself in the disclosure to other specificadaptations, it will of course be understood that changes andmodifications might be resorted to in the form and arrangement of theseparts as herein mentioned, as well as the remaining parts, withoutdeparting from the spirit and scope of my invention, and hence I do notwish to be limited to the exact disclosure but rather only to suchpoints as may be set forth in the claims.

I claim:

1. The combination with a flue, of a smoke washing means, a suctionmeans connected with said smoke Washing means, a damper positionedwithin said flue, and means for simultaneously closing said damper andoperating the said suction means.

2. The combination with a flue, of a smoke washing means, a suction fancooperating with said smoke Washing means for creating a suctiontherethrough, a damper positioned within said flue, and means connectedto said damper and to said suction fan for simultaneously closing saiddamper and operating said suction fan.

3. A smoke purifier comprising a stack, a smoke Washing tank, a smokepipe connecting said stack with said Washing tank, inj ector pipesextending into said smoke pipe, means connecting said injector pipe witha steam boiler for furnishing steam thereto, said injector pipes adaptedto discharge steam toward the outlet discharge end of said. smoke pipefor driving the smoke into said washing tank, a suction fan cooperatingwith said washing tank and adapted to create a suction therethrough, awater sup ply pipe extending into said washing tank, a plurality oflaterally extending spraying tubes carried by said water supply pipe andarranged one above the other for extending transversely through saidwashing tank throughout its entire height and constituting means forthoroughly washing the smoke within the washing tank, and a drainingpipe carried by said washing tank.

4. A smoke purifying device comprising a flue, a Washing tank, a tubeconnecting said flue with said washing tank, means for injecting jets ofsteam through said tube for causing smoke to be discharged from saidflue into said washing tank, washing means positioned within saidwashing tank, means for draining said Washing tank, and a suction :t'anassociated with said washing tank for drawing the purified smoke fromsaid washing tank and discharging the same at a desired point.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM W. MARTIN.

Witnesses:

M. J. FRIEDL, Jr., LoUIs DANENI-IAUER.

Copies of this patent maybe obtained for five cents each, by addressingthe "Commissioner of Patents. Washington, D. 0."

